Winfrey bought a 10% stake in the struggling company for $43 million in October 2015, and joined its board of directors. Weight Watchers enrollment has climbed by nearly one million members since Winfrey signed on.

If elected, Winfrey would not be required to sell any of her investments or her stakes in Harpo Productions and the Oprah Winfrey Network,.

Only unelected executive branch officials are prohibited from holding stakes in assets that would conflict with their ability to properly do their jobs.

But Congress decided not to apply those restrictions to the president or vice president. They have to disclose their holdings, but they don't have to disown them.